“…Co-morbidity factors associated with TMD are as follows: psychological (stress, anxiety, tension), structural (occlusion), repetitive microtrauma from parafunctional habits (both bite and nonbite related), and external traumas (Manfredino, Bandethini, & Cantini, 2009;Manfredini & Lobbezoo, 2009;Molina, Peixoto, & Manzutti Eid, 2011). Several studies of general pain, as well as TMD, have indicated an association with psychosomatic and/or psychosocial aspects (De Leeuw et al, 1994;Dworkin, 2010;Ivkovic, Mladenovic, Petkovic, & Stojic, 2008;Suvinen, Reade, Sunden, Gerschman, & Koukounas, 1997a, 1997b.…”